CVE-2021-20049 : A vulnerability in SonicWall SMA100 password change API allows a remote unauthen

A vulnerability in SonicWall SMA100 password change API allows a remote unauthenticated attacker to perform SMA100 username enumeration based on the server responses. This vulnerability impacts 10.2.1.2-24sv, 10.2.0.8-37sv and earlier 10.x versions.

Published 2021-12-23 02:15:07

Updated 2022-07-08 18:20:05

Source SonicWALL, Inc.

View at NVD, CVE.org

Products affected by CVE-2021-20049

Sonicwall » Sma 100 Firmware
Versions before (<) 10.0.0.0
cpe:2.3:o:sonicwall:sma_100_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma100 » Version: N/A
Sonicwall » Sma 100 Firmware » Version: 10.2.0.8-37sv
cpe:2.3:o:sonicwall:sma_100_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma100 » Version: N/A
Sonicwall » Sma 100 Firmware » Version: 10.2.1.2-24sv
cpe:2.3:o:sonicwall:sma_100_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma100 » Version: N/A
Sonicwall » Sma 200 Firmware
Versions before (<) 10.0.0.0
cpe:2.3:o:sonicwall:sma_200_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma200 » Version: N/A
Sonicwall » Sma 200 Firmware » Version: 10.2.0.8-37sv
cpe:2.3:o:sonicwall:sma_200_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma200 » Version: N/A
Sonicwall » Sma 200 Firmware » Version: 10.2.1.2-24sv
cpe:2.3:o:sonicwall:sma_200_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma200 » Version: N/A
Sonicwall » Sma 210 Firmware
Versions before (<) 10.0.0.0
cpe:2.3:o:sonicwall:sma_210_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma210 » Version: N/A
Sonicwall » Sma 210 Firmware » Version: 10.2.0.8-37sv
cpe:2.3:o:sonicwall:sma_210_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma210 » Version: N/A
Sonicwall » Sma 210 Firmware » Version: 10.2.1.2-24sv
cpe:2.3:o:sonicwall:sma_210_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma210 » Version: N/A
Sonicwall » Sma 400 Firmware
Versions before (<) 10.0.0.0
cpe:2.3:o:sonicwall:sma_400_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma400 » Version: N/A
Sonicwall » Sma 400 Firmware » Version: 10.2.0.8-37sv
cpe:2.3:o:sonicwall:sma_400_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma400 » Version: N/A
Sonicwall » Sma 400 Firmware » Version: 10.2.1.2-24sv
cpe:2.3:o:sonicwall:sma_400_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma400 » Version: N/A
Sonicwall » Sma 410 Firmware
Versions before (<) 10.0.0.0
cpe:2.3:o:sonicwall:sma_410_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma410 » Version: N/A
Sonicwall » Sma 410 Firmware » Version: 10.2.0.8-37sv
cpe:2.3:o:sonicwall:sma_410_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma410 » Version: N/A
Sonicwall » Sma 410 Firmware » Version: 10.2.1.2-24sv
cpe:2.3:o:sonicwall:sma_410_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma410 » Version: N/A
Sonicwall » Sma 500v Firmware
Versions before (<) 10.0.0.0
cpe:2.3:o:sonicwall:sma_500v_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma500v » Version: N/A
Sonicwall » Sma 500v Firmware » Version: 10.2.0.8-37sv
cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma500v » Version: N/A
Sonicwall » Sma 500v Firmware » Version: 10.2.1.2-24sv
cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
Matching versions
When used together with: Sonicwall » Sma500v » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2021-20049

EPSS FAQ

0.45%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 61 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-20049

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:P/I:N/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: None

CWE ids for CVE-2021-20049

CWE-203 Observable Discrepancy

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

Assigned by: nvd@nist.gov (Primary)
CWE-204 Observable Response Discrepancy

The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere.

Assigned by: PSIRT@sonicwall.com (Secondary)

References for CVE-2021-20049

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0030

Security Advisory
Vendor Advisory

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Vulnerability Details : CVE-2021-20049

Products affected by CVE-2021-20049

Exploit prediction scoring system (EPSS) score for CVE-2021-20049

CVSS scores for CVE-2021-20049

CWE ids for CVE-2021-20049

References for CVE-2021-20049